RFA Olcades (British Beacon). RFA Oligarch (British Lantern). RFA Olynthus (British Star). RFA Olwen (British Light).
DWT approx 10500. Built 1917-1919. Aquired by Admiralty 1918-1922. Managed by BTC until 1936 when transferred to DoS and renamed.
RFA Olna. RFA Oleander.
DWT approx 10200. Dockyard built 1921-1922.
Managed by Davies & Newman with RFA crews until 1936
Length overall: 444.1 ft. Beam: 57 ft. Depth: 33 ft Draught: 27.2 ft
Machinery: 1 screw, triple expansion engine, made by respective builders, 3100 ihp; 3 Scotch boilers Speed: 10-11 knots Complement: 43